"""
登录尝试历史记录模型
用于记录登录尝试的变更历史，支持审计和追溯
"""
from datetime import datetime
from app.utils.timezone import beijing_now_naive
from sqlalchemy import Column, Integer, String, DateTime, Boolean, Text
from app.database import Base


class LoginAttemptHis(Base):
    """
    登录尝试历史记录表
    用于记录 login_attempts 表的变更历史，支持：
    - 记录每次登录尝试的详细信息
    - 追踪账号锁定/解锁事件
    - 安全审计和异常检测
    """
    __tablename__ = "login_attempts_his"

    id = Column(Integer, primary_key=True, autoincrement=True, comment="主键ID")
    username = Column(String(100), nullable=False, index=True, comment="用户名")
    success = Column(Boolean, default=False, comment="是否成功: 1-成功, 0-失败")
    machine_code = Column(String(255), nullable=True, comment="机器码")
    ip_address = Column(String(45), nullable=True, comment="IP地址")
    user_agent = Column(String(500), nullable=True, comment="用户代理")
    failure_reason = Column(String(255), nullable=True, comment="失败原因")
    attempted_at = Column(DateTime, default=beijing_now_naive, comment="尝试时间")
    
    # 历史记录字段
    action_type = Column(String(20), nullable=False, comment="操作类型: INSERT/UPDATE/DELETE")
    changed_fields = Column(Text, nullable=True, comment="变更字段(JSON格式)")
    operator = Column(String(100), nullable=True, comment="操作者: system/user_id")
    created_at = Column(DateTime, default=beijing_now_naive, comment="记录创建时间")

    def __repr__(self):
        return f"<LoginAttemptHis(id={self.id}, username='{self.username}', action_type='{self.action_type}', attempted_at={self.attempted_at})>"